(pick robot2 ball3 room2 lgripper2)
(move robot2 room2 room3)
(drop robot2 ball3 room3 lgripper2)
(pick robot1 ball1 room4 lgripper1)
(pick robot1 ball2 room4 rgripper1)
(move robot1 room4 room2)
(drop robot1 ball1 room2 lgripper1)
(move robot1 room2 room3)
(drop robot1 ball2 room3 rgripper1)
; cost = 9 (unit cost)
